🤦 actually use tsig keys for notifies/xfrs

roles/knot/templates/etc/knot/knot.conf.j2

@@ -38,6 +38,9 @@ remote:
 {% for remote in ( (zones | map(attribute='replicas') ) + (zones | map(attribute='masters') ) ) | flatten | unique %}
 
   - id: remote-{{ remote }}
+{% if knot_tsig_key is defined %}
+    key: {{ knot_tsig_key.name }}
+{% endif %}
 {% for address in hostvars[remote].knot_dns_addresses %}
     address: "{{ address }}"
 {% endfor %}